Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/679eab6303d8
Author: EragonJ <eragonj@eragonj.me>
Desc: bug 932731 - [DSDS][Gaia][Sim Manager] can set outgoing call, msg and data

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https://hg.mozilla.org/integration/gaia-central/rev/f70332a1be1a
Author: Julien Wajsberg <felash@gmail.com>
Desc: Revert "Merge pull request #13283 from EragonJ/bug-932731"

This reverts commit 9e0df13811b577026b70ccfdcd9b4a309746e8ba, reversing
changes made to 13e51d5f543729bb38cdd054d6452bf3f3e611ae.